Port Jefferson Sea Conditions and Tide Table

Port Jefferson Sea Conditions table showing wave height, swell direction and period.

High and low tide times are also provided on the table along with the moon phase and forecast weather. Sunrise today is at 07:56 AM and sunset is at 04:22 PM.

Days 1–3 Weather Summary

Moderate rain (total 13mm), heaviest on Thu afternoon. Low air temperatures (max 6°C on Thu morning, min 3°C on Fri night). Wind will be generally light.

Days 4–6 Weather Summary

Mostly dry. Low air temperatures (max 5°C on Sun afternoon, min 2°C on Sun morning). Wind will be generally light.

Days 7–9 Weather Summary

Light rain (total 6mm), mostly falling on Fri night. Mild temperatures (max 9°C on Thu morning, min 5°C on Wed night). Winds increasing (calm on Wed morning, fresh winds from the SSW by Fri night).

Days 10–12 Weather Summary

Moderate rain (total 11mm), heaviest on Sun night. Mild temperatures (max 8°C on Sun morning, min 5°C on Sat morning). Wind will be generally light.

Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
1
Friday
2
Saturday
3
Sunday
4
Monday
5
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
AM
PM
night
Wave Height Map
High Tide
8:58AM3.66m
7:45PM2.41m
9:29AM3.63m
9:07PM2.28m
10:02AM3.60m
10:41PM2.28m
10:36AM3.56m
00:22AM2.44m
11:12AM3.52m
1:56AM2.76m
11:53AM3.49m
3:11AM3.11m
12:38PM3.47m
4:11AM3.42m
1:25PM3.41m
5:00AM3.64m
2:20PM3.39m
5:44AM3.78m
3:15PM3.34m
6:25AM3.85m
4:12PM3.23m
7:04AM3.86m
5:10PM3.07m
Low Tide
3:11PM1.76m
2:16AM0.41m
4:04PM1.41m
3:03AM0.85m
4:57PM0.99m
3:57AM1.34m
5:49PM0.53m
5:02AM1.82m
6:40PM0.07m
6:16AM2.21m
7:31PM-0.35m
7:33AM2.46m
8:19PM-0.67m
8:45AM2.60m
9:08PM-0.91m
9:48AM2.58m
9:57PM-1.02m
10:44AM2.47m
10:44PM-0.99m
11:37AM2.31m
11:30PM-0.84m
12:29PM2.10m
00:14AM-0.55m
Wave
height (m) 
direction
period (s) 
light rain
mod rain
part cloud
cloud
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
light rain
rain showers
light rain
cloud
cloud
part cloud
part cloud
mod rain
cloud
cloud
part cloud
light rain
mod rain
some clouds
cloudy
light rain
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
some clouds
cloudy
cloudy
cloudy
some clouds
some clouds
cloudy
cloudy
cloudy
light rain
light rain
rain shwrs
light rain
cloudy
cloudy
some clouds
some clouds
mod rain
cloudy
cloudy
some clouds
 km/h
20
N
0
SSE
10
S
15
S
0
N
5
N
5
SW
5
SSE
5
SSE
5
SSE
0
ESE
0
NE
5
NNE
5
N
5
N
5
N
0
NNE
5
ESE
0
SSW
5
NNW
5
SSW
10
SSE
10
SSE
5
ENE
5
E
0
SE
35
SSW
15
S
20
S
20
S
20
SSW
20
SSW
25
SSW
5
S
10
S
0
SE
 mm 
4
7
2
1
2
3
3
8
max°C
6
6
6
6
5
3
4
5
3
4
5
4
4
4
3
5
5
5
8
8
6
9
9
8
7
6
7
6
7
5
8
7
7
7
6
6
Moonrise
11:13
11:29
11:44
12:02
12:23
12:50
1:27
2:19
3:27
4:49
6:14
7:37
Moonset
10:33
11:48
1:05
2:25
3:51
5:18
6:40
7:51
8:44
9:22
9:49
Sunrise
7:56
7:56
7:58
7:58
7:58
7:58
7:58
7:58
7:58
7:58
7:58
7:58
Sunset
4:22
4:22
4:23
4:23
4:24
4:25
4:27
4:28
4:29
4:30
4:30
4:31
Today's sea temperature in Port Jefferson is
9.4° C
(Statistics for 25 Dec 1981-2005 – mean: 8.4 max: 9.6 min: 7.2°C)
Issued (local time): 9 am Thursday 25 Dec 2025
Forecast update inUpdates in  hr  min  sUpdate imminent
Nearest locationNearest